Cheapest return SIN–KTM flights, September

AirHint found the following cheapest return flights from Singapore (SIN) to Kathmandu (KTM) in September 2026 (see full year).

Return flights

18 Sep - 29 Sep Air India
16 Sep - 27 Sep Air India
02 Sep - 05 Sep IndiGo
08 Sep - 12 Sep IndiGo
10 Sep - 19 Sep IndiGo
09 Sep - 19 Sep IndiGo
04 Sep - 11 Sep IndiGo
03 Sep - 06 Sep IndiGo
20 Sep - 27 Sep Air India
17 Sep - 24 Sep Air India
26 Sep - 04 Oct SriLankan Airlines
20 Sep - 19 Oct IndiGo
26 Sep - 04 Oct Singapore Airlines direct

Also check the deals for one-way flights from Singapore to Kathmandu in September.

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